[PATCH v2 2/7] intel_pstate: convert to use acpi_match_oemlist()

Toshi Kani
2017-08-03T22:07:30Z

Convert to use acpi_match_oemlist() for the platform check.
There is no change in functionality.

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
---
drivers/cpufreq/intel_pstate.c | 64 ++++++++++++++++------------------------
1 file changed, 25 insertions(+), 39 deletions(-)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 6cd5035..7944723 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2475,39 +2475,31 @@ enum {
PPC,
};

-struct hw_vendor_info {
- u16 valid;
- char oem_id[ACPI_OEM_ID_SIZE];
- char oem_table_id[ACPI_OEM_TABLE_ID_SIZE];
- int oem_pwr_table;
-};
-
/* Hardware vendor-specific info that has its own power management modes */
-static struct hw_vendor_info vendor_info[] __initdata = {
- {1, "HP ", "ProLiant", PSS},
- {1, "ORACLE", "X4-2 ", PPC},
- {1, "ORACLE", "X4-2L ", PPC},
- {1, "ORACLE", "X4-2B ", PPC},
- {1, "ORACLE", "X3-2 ", PPC},
- {1, "ORACLE", "X3-2L ", PPC},
- {1, "ORACLE", "X3-2B ", PPC},
- {1, "ORACLE", "X4470M2 ", PPC},
- {1, "ORACLE", "X4270M3 ", PPC},
- {1, "ORACLE", "X4270M2 ", PPC},
- {1, "ORACLE", "X4170M2 ", PPC},
- {1, "ORACLE", "X4170 M3", PPC},
- {1, "ORACLE", "X4275 M3", PPC},
- {1, "ORACLE", "X6-2 ", PPC},
- {1, "ORACLE", "Sudbury ", PPC},
- {0, "", ""},
+static struct acpi_oemlist oemlist[] __initdata = {
+ {"HP ", "ProLiant", 0, ACPI_SIG_FADT, all_versions, 0, PSS},
+ {"ORACLE", "X4-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X4-2L ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X4-2B ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X3-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X3-2L ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X3-2B ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X4470M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X4270M3 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X4270M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X4170M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X4170 M3", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X4275 M3", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "X6-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ {"ORACLE", "Sudbury ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+ { } /* End */
};

static bool __init intel_pstate_platform_pwr_mgmt_exists(void)
{
- struct acpi_table_header hdr;
- struct hw_vendor_info *v_info;
const struct x86_cpu_id *id;
u64 misc_pwr;
+ int idx;

id = x86_match_cpu(intel_pstate_cpu_oob_ids);
if (id) {
@@ -2516,21 +2508,15 @@ static bool __init intel_pstate_platform_pwr_mgmt_exists(void)
return true;
}

- if (acpi_disabled ||
- ACPI_FAILURE(acpi_get_table_header(ACPI_SIG_FADT, 0, &hdr)))
+ idx = acpi_match_oemlist(oemlist);
+ if (idx < 0)
return false;

- for (v_info = vendor_info; v_info->valid; v_info++) {
- if (!strncmp(hdr.oem_id, v_info->oem_id, ACPI_OEM_ID_SIZE) &&
- !strncmp(hdr.oem_table_id, v_info->oem_table_id,
- ACPI_OEM_TABLE_ID_SIZE))
- switch (v_info->oem_pwr_table) {
- case PSS:
- return intel_pstate_no_acpi_pss();
- case PPC:
- return intel_pstate_has_acpi_ppc() &&
- (!force_load);
- }
+ switch (oemlist[idx].data) {
+ case PSS:
+ return intel_pstate_no_acpi_pss();
+ case PPC:
+ return intel_pstate_has_acpi_ppc() && !force_load;
}

return false;